Hi, how do you know it only reads the sensor once?
Have you got a counter on the screen that increments each time it reads the sensor.
I agree with Robin2, modularise your sketch so that each activity is in its own part of the program.
Tom.... 
Hi, how do you know it only reads the sensor once?
Have you got a counter on the screen that increments each time it reads the sensor.
I agree with Robin2, modularise your sketch so that each activity is in its own part of the program.
Tom....